In this task, you are given an article. Your task is to summarize the article in a sentence.

In a televised speech, NicolÃ¡s Maduro said Venezuelans had to be prepared to defend the country against "the imperialist boot".
The "civic-military" exercises are due to take place on 26-27 August.
Mr Trump warned last Friday that the US was looking at all options on Venezuela "including a possible military option".
His comments were condemned by other Latin American countries and by the Venezuelan opposition.
Venezuela faces a worsening political crisis and more than 120 people have been killed in anti-government protests since April.
"The land of Venezuela is sacred and should never be touched by the Yankee imperialist boot," Mr Maduro told government supporters following a rally in the capital Caracas.
"Let's prepare ourselves to defend the peace with tanks, planes and guns. Let the traitors to the country listen well, I have given the order, I have given the order to the superior chief of staff of the Bolivarian National Armed Forces to start the preparations for a civic-military exercise".
Thousands of Venezuelans heeded President Nicolas Maduro's call to take to the streets to show opposition to the US on Monday.
Many waved banners saying "Stop Trump".
In a further show of defiance, Venezuelan Defence Minister Vladimir Padrino appeared on television with battle-ready troops behind him at an army base.
He warned the US not to steal Venezuela's oil reserves and warned the opposition not to be ambivalent.
"This is a time for reflection, you are either a Venezuelan patriot, or pro-Yankee," he said.
The Venezuelan opposition rebuffed Mr Trump's comments, saying they played into the hands of Mr Maduro who has often alleged that the US wants to take over the country.
Mr Maduro has consistently argued that the US is trying to remove him to get hold of Venezuela's oil reserves - the largest in the world.
Earlier on Monday, US Vice-President Mike Pence said President Trump was showing "his resolve not to stand by and let a neighbour collapse into dictatorship".
Speaking in the Colombian city of Cartagena at the beginning of a regional tour, he said the US would use its "full economic and diplomatic weight to help restore democracy in Venezuela".
Mr Pence said the US would involve countries across the world to pressure the Venezuelan government to allow elections.
When asked by reporters whether pressure would include oil sanctions, Mr Pence said the US was looking at a "full range of economic sanctions".
Venezuela's president has ordered the armed forces to hold exercises following US President Donald Trump comments about military intervention.

Brown quit the Scotland fold last week having reached the 50 cap mark, to focus all his attention on his club.
However, the 31-year-old says he was worried about disappointing national coach Gordon Strachan, who first took him to Parkhead from Hibernian.
"I've been playing international football for 11 years with no break at all, season over season," said Brown.
"It's a sad day for myself. I really enjoyed playing for Scotland and I think the biggest thing for me was letting the gaffer down.
"He brought me to Celtic and he means so much to me. We spoke and he was wonderful, to be perfectly honest."
Brown responded firmly to those who have criticised the timing of his decision, with the 2018 World Cup qualifiers beginning in Malta on Sunday, 4 September.
"Well, I don't want to pull out halfway through a campaign, do I?" he told BBC Scotland. "Once my mind's set, that's it. For me there's no going back.
"I'm quite stubborn that way and I think it's good timing for pretty much everyone.
"I've done 11 hard seasons going away on international breaks, not seeing family, not having the chill-out time.
"So, I think it's a good time for me to call it a day."
Speaking at Monday's squad announcement, Strachan admitted the national team were "weaker" without Brown, but did not name his successor as captain.
The Scotland boss confirmed he would speak to West Bromwich Albion midfielder Darren Fletcher, who wore the armband in summer friendlies against Italy and France, but Hull City midfielder Robert Snodgrass has also "thrown his name into the hat".
Celtic captain Scott Brown believes he had to be selfish when deciding to retire from international football.

Ahmed Mansour, who works for the network's Arabic-language service, was detained as he tried to board a flight from Berlin to Qatar.
A court in Egypt's capital Cairo sentenced him to 15 years in prison in absentia last year on torture charges.
Mr Mansour's lawyer said an extradition hearing would take place on Monday.
Even if the court backs his extradition, the German government could still veto the ruling.
Al-Jazeera says the charges made against Mr Mansour, who has dual British and Egyptian citizenship, are absurd and false.
He is accused, along with two Muslim Brotherhood members and an Islamic preacher, of taking part in the torture of a lawyer in Cairo's Tahrir Square in 2011, during protests against then-President Hosni Mubarak.
Video footage shows the lawyer being kicked but does not show Mr Mansour, according to the Associated Press news agency. The journalist later interviewed the preacher about the incident, AP says.
As Mr Mansour spent a second night in custody in Berlin on Sunday, protesters gathered outside the prison in which he is being held.
The group, calling itself the German-Egyptian Union for Democracy, demanded Mr Mansour's immediate release.
A police spokesman said that the Egyptian-issued arrest warrant accused Mr Mansour of committing "several crimes" but he gave no further details.
Al-Jazeera said the warrant was previously rejected by the international police body Interpol as it did not meet its rules.
In a video recorded while detained, Mr Mansour described the incident as a "misunderstanding" and said he hoped it would be resolved quickly.
"It is quite ludicrous that a country like Germany would enforce and support such a request made by a dictatorial regime like the one we have in Egypt," he added.
"Other countries must not allow themselves to be tools of this media oppression, least of all those that respect freedom of the media as does Germany," said the al-Jazeera acting director, Gen Mostefa Souag.
Relations between Doha and Cairo have been strained by Qatar's support for the now-banned Muslim Brotherhood organisation in Egypt.
Three al-Jazeera journalists - Australian Peter Greste, Canadian Mohamed Fahmy and Egyptian Baher Mohamed - were arrested in Egypt in 2013 and convicted of supporting the Muslim Brotherhood in a case which caused international outrage.
They are being retried after their convictions were overturned in January. Mr Greste was deported to Australia in February and is being retried in absentia.

A German court is due to rule on an extradition request from Egypt concerning a senior journalist from the al-Jazeera channel.

